I have created two ViewCrontroller using xib and set orientation of UIViews is LandscapeLeft.
and than add this code to
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
The following is my ideal result:
I'd like the window under the status bar in ios 7,
The first view, the result is what I want to get, however, when it jumps to the second view, there is a problem! The window move 20px to the left. how to fit it into the normal view?
3.Most impornatant condition is Autolayout is "TRUE".
my testing code:
https://www.dropbox.com/s/bj9wg4hwar1t8y0/statusbartesting.zip
Can anyone help to solve this problem?
You don't need to change window frame in AppDelegate.
I'll tell you code, please follow it
Appdelegate.m
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
self.window.backgroundColor = [UIColor whiteColor];
[self.window makeKeyAndVisible];
self.mxfirstciewcontroller = [[firstViewController alloc] initWithNibName:#"firstViewController" bundle:nil];
self.window.rootViewController = [[UINavigationController alloc] initWithRootViewController:self.mxfirstciewcontroller];
[(UINavigationController *)self.window.rootViewController setNavigationBarHidden:YES];
return YES;
}
In firstViewController.m
- (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
[self.view setFrame:CGRectMake(0, 20, self.view.frame.size.width, self.view.frame.size.height)];
}
In secondViewController.m
- (void)viewDidAppear:(BOOL)animated{
[super viewDidAppear:animated];
[self.view setFrame:CGRectMake(20, 0, self.view.frame.size.width, self.view.frame.size.height)];
}
Related
I am using the following code in my app delegate to programmatically create the application's window and root controller:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
// Override point for customization after application launch.
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
self.window.rootViewController = [[UIViewController alloc] init];
self.window.rootViewController.view = [[UIView alloc] init];
self.window.rootViewController.view.backgroundColor = [UIColor redColor];
return TRUE;
}
The code works fine, however the view associated to the root view controller overlaps the status bar, which I would like to avoid (see picture below).
How should I proceed? In particular I want to have a lightgray background for the status bar (similar to the apps created with a storyboard) and also handle orientation change correctly.
Thanks
Well, you can do something as following:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
// Override point for customization after application launch.
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
self.window.rootViewController = [[UIViewController alloc] init];
self.window.rootViewController.view.backgroundColor = [UIColor whiteColor];
UIView *redView = [[UIView alloc] initWithFrame:CGRectMake(0,
[UIApplication sharedApplication].statusBarFrame.size.height,
[UIScreen mainScreen].bounds.size.width,
[UIScreen mainScreen].bounds.size.height)];
redView.backgroundColor = [UIColor redColor];
[self.window.rootViewController.view addSubview:redView];
[self.window makeKeyAndVisible];
return TRUE;
}
should look like this:
I added my custom view to the window but it doesn't work. I tried to figure it out but it doesn't work well. (I created this project with the empty project template without using storyboards). This screen is supposed to show the red rectangle towards the bottom right corner of the screen.
I wanted to add my custom view showing red screen to the window, but it just shows the white screen.
AppDelegate.m:
//
// HypnosisterAppDelegate.m
// Hypnosister
//
// Created by TSH on 12/1/13.
// Copyright (c) 2013 TSH. All rights reserved.
//
#import "HypnosisterAppDelegate.h"
#import "HypnosisterViewController.h"
#import "HypnosisView.h"
#implementation HypnosisterAppDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
HypnosisterViewController *test = [[HypnosisterViewController alloc] initWithNibName:#"HypnosisterViewController" bundle:nil];
UINavigationController *nav = [[UINavigationController alloc] initWithRootViewController:test];
self.window.rootViewController = nav;
CGRect viewFrame = CGRectMake(16, 24, 10, 15);
HypnosisView *view = [[HypnosisView alloc] initWithFrame:viewFrame];
[view setBackgroundColor:[UIColor redColor]];
[[self window] addSubview:view];
self.window.backgroundColor = [UIColor whiteColor];
[self.window makeKeyAndVisible];
return YES;
}
#end
[edit]
I just messed up the ordering.
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
self.window.backgroundColor = [UIColor whiteColor];
[self.window makeKeyAndVisible];
HypnosisterViewController *test = [[HypnosisterViewController alloc] initWithNibName:#"HypnosisterViewController" bundle:nil];
UINavigationController *nav = [[UINavigationController alloc] initWithRootViewController:test];
self.window.rootViewController = nav;
CGRect viewFrame = CGRectMake(160, 240, 100, 150);
HypnosisView *view = [[HypnosisView alloc] initWithFrame:viewFrame];
[view setBackgroundColor:[UIColor redColor]];
[[self window] addSubview:view];
return YES;
}
As you set navigationcontroller as rootviewcontroller so HypnosisterViewController will appear every time no doubts. If you want to add a custom view to have to add as a subview on the HypnosisterViewController.
HypnosisView *view = [[HypnosisView alloc] initWithFrame:viewFrame];
[view setBackgroundColor:[UIColor redColor]];
[test.view addSubview:view];
Hopefully it will work
#toshi You code is correct just you missed the ordering .Use this code it will work.Let me know if it doesn't work.
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
HypnosisterViewController *test = [[HypnosisterViewController alloc] initWithNibName:#"HypnosisterViewController" bundle:nil];
UINavigationController *nav = [[UINavigationController alloc] initWithRootViewController:test];
self.window.rootViewController = nav;
[self.window makeKeyAndVisible];
CGRect viewFrame = CGRectMake(16, self.window.frame.size.height - 24, 10, 15);
HypnosisView *view = [[HypnosisView alloc] initWithFrame:viewFrame];
[view setBackgroundColor:[UIColor redColor]];
[[self window] addSubview:view];
self.window.backgroundColor = [UIColor whiteColor];
return YES;
}
There is two points
1- The coordinate of the view in iOS begin from top-left so this frame (16, 24, 10, 15) will in the top-left of the view as frame calculated as (x,y,width,height)
2- Window does not responds to device Orientation. It will be always Portrait. If you rotate your device you will need to re-calculate the view Coordinate.
All I am simply trying to do is display an image on the screen as I am just starting out iOS
development. I figured since UIImageView is a subclass of UIView, I would add it in a similar way but I am not having any luck. I understand this is an easy question but any help would be appreciated.
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions: (NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
self.window.rootViewController = [UIViewController new];
UIImage* stallion = [UIImage imageNamed:#"stallion1.png"];
UIImageView* iv = [UIImageView alloc];
iv.image = stallion;
[self.window.rootViewController.view addSubview:iv];
[self.window makeKeyAndVisible];
return YES;
}
Try something like this:
App delegate:
#import "RootViewController.h"
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
//allocate and initialize the root view controller
RootViewController *rootViewController = [[RootViewController alloc] init];
//set the root view controller
self.window.rootViewController = rootViewController;
[self.window makeKeyAndVisible];
return YES;
}
Create a subclass of UIViewController called RootViewController
.h
#import <UIKit/UIKit.h>
//set the class RootViewController as a subcalss of UIViewController
#interface RootViewController : UIViewController
#end
.m
//this is one of the life cycle methods of a UIViewController and should already be in the code when the class is created
- (void)viewDidLoad
{
//execute the viewDidLoad method of the superclass (UIViewController)
[super viewDidLoad];
//allocate and initialize the image view
//assign the image view a frame
//x offset from the left = 0.0
//y offset from the top = 0.0
//width = the view controller's view's width (should be the whole screen)
//height = the view controller's view's height(should be the whole screen)
UIImageView *iv = [[UIImageView alloc] initWithFrame:CGRectMake(0.0, 0.0, self.view.frame.size.width, self.view.frame.size.height)];
[iv setImage:[UIImage imageNamed:#"myImageName.png"]];
//the background will be red if everything is setup correctly, but the image isn't found
[iv setBackgroundColor:[UIColor redColor]];
//add the image view to the view controller's view
[self.view addSubview:iv];
}
//EDIT
It would be very helpful for you if u will read book in which there are information about View Controllers. This is very essential information. I recommend you to read "The Core IOS 6 Cookbook" by Erica Sadum. It really helped me.
You can also just look at the apple documentation http://developer.apple.com/library/ios/#documentation/WindowsViews/Conceptual/ViewControllerCatalog/
Write something like this in AppDelegate.m:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
MyViewController *viewController = [[MyViewController alloc] init];
self.window.rootViewController = viewController;
[self.window makeKeyAndVisible];
return YES;
}
Next you must add the UIImageView but only when the view of the created view controller is loaded. The best method for this is viewDidLoad. You can also use viewDidAppear: or viewWillAppear:.
You must override this methods in MyViewController class (which should inherit from the UIViewController class).
- (void)viewDidLoad
{
[super viewDidLoad];
UIImageView *imageView = [UIImageView alloc] initWithFrame:CGRectMake(0.0, 0.0, self.frame.size.width, self.frame.size.heigth);
imageView.image = [UIImage imageNamed#"stallion1.png"];
[self.view addSubview:imageView];
}
I am attempting to add an UIImageView as the first view that is shown after my Default.png disappears. This should be super easy but for some reason I am getting a black screen.
// AppDelegate.m
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
UIImageView *newimageview = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 320, 480)];
[newimageview setImage:[UIImage imageNamed:#"myimage.png"]];
[_window addSubview:newimageview];
[_window bringSubviewToFront:newimageview];
}
I also tried setting the background color of newimageview to see if I just wasn't loading my image file properly, but the screen still appeared black.
Any help would be appreciated, I feel pretty dumb at the moment.
I just created a new project and modified only the didFinishLaunchingWithOptions method. Here is exactly the code I am using. I changed nothing else in the project:
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
UIImageView *newimageview = [[UIImageView alloc] initWithImage:[UIImage imageNamed:#"bg-basketball"]];
[self.window addSubview:newimageview];
[self.window bringSubviewToFront:newimageview];
// Override point for customization after application launch.
//self.window.backgroundColor = [UIColor whiteColor];
//[self.window makeKeyAndVisible];
return YES;
}
And i am still getting the same black screen result.
I have added bg-basketball.png and bg-basketball#2x.png to my project and can see both images in XCode.
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
self.viewController = [[ViewController alloc] initWithNibName:#"ViewController" bundle:nil];//Add this line
This is works for me.
in loggerViewController.m:
- (void)viewDidLoad
{
[super viewDidLoad];
UIView* mainView = [[UIView alloc] initWithFrame:[UIScreen mainScreen].bounds];
[self.view addSubview:mainView]; // <-- Problem is here
}
loggingViewController is an iVar of my appDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
.
.
loggingViewController = [[loggerViewController alloc] init];
[loggingViewController.view setBackgroundColor:[UIColor blueColor]];
// [loggingViewController loadView];
[self.view addSubview:loggingViewController.view];
}
I was expecting my AppDelegate to call loggingViewController, which in turn, set up it's own subviews inside and it would be done. But instead the viewDidLoad gets called recursively I don't understand why?
Try it like this,
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];
loggingViewController = [[loggerViewController alloc] init];
self.window.rootViewController = loggingViewController;
[self.window makeKeyAndVisible];
}
The reason for recursive calling is that your self.view is nil and hence it is try to call again and again when you are trying to add it as a subview of appdelegate's view.
- (void)viewDidLoad
{
[super viewDidLoad];
UIView* mainView = [[UIView alloc] initWithFrame:[UIScreen mainScreen].bounds];
[self.view setBackgroundColor:[UIColor blueColor]];
[self.view addSubview:mainView];
}